Water heater



W. KAHLSSON.

WATER HEATER.

APPLICATION HLED AUG.1B.1921.

1,407,282, Patented Feb. 21, .1922.

2 SHEETS-SHEET 1.

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WALERID KAELSSON, OE VIGGEYEOLM, SWEDEN, ASSrGNoE 'ro .je-ETIEBOLAGET TUBUS, OE STOCKHOLM, SWEDEN, AN ORGANIZATION OE SWEDEN.

WATER HEATER.

Appuaeon sied August 1s, 1921. seriarNo. 493,495.

T 0 aZZ whom t may concern:

VBe it known that I, I/VALERTD KARLSSON, a subject of the King of Sweden, residing at Viggbyholm, Sweden, have invented a Water Heater, of which the following is a specification.

My invention relates to improvements in heaters for central systems of heating and for other purposes of the kind described in my previous application No.V 383,026, wherel the heater consists of a series of upright with the furnace and the other end with the.

chimney, direct or indirect.

Inmy present improvement the lowest flue of each set is arranged beneath the heater Vinstead of within the same, and said lowest flues may be extended transversely toward Y each other so as to flow together and form a single broad ue instead of two flues.

As the gases, when passing this broad flue-give offtheir heat to the entire or nearly entire lower surface of the heater, theeifect of this lheater will be about the same as that of the heater described in the'previous application though the number of pipes in the members is smaller and the cost of manufacture cheaper, Y.

as the number of joints to be welded is less.

In the accompanying drawings, which show some examples,

Fig. l is front view of the-heater.

v Fig. 2 is a vertical longitudinal section on the line 2 2 of 1.

Figg3 shows the' rear side. Fig. 4 is front view of a second example. Fig. 5 is'one half of aA horizontal section of the same on line 5 5 of Fig. 4l. Fig. 6 is frontview ofthe front member, partly section. f

Fig. 7 front view of thev second member or rear view of the third member) 8 view of an intermediate member and l Fig. 9 view of one of the reary members v(Z or m). l

Specification of Letters atent.' Patented Feb', 21', 1922.`

Fig. 10 is front view of the frontmember i of the heater shown in Fig. l. b Fig. 11 is front view of the second mem'- er. s y Fig. l2 is section ofone of the couplings. 7,., In all figures except Fig. 5 the insulation and sheet cover are omitted. In Figs. 1 and 4 the right half of the frontplatep is Omitted. In Figs. 3, 1 and 5 the couplings and the assembling tubes are omitted.

In Fig, 2 the heater has twelve members marked t b c Z c f Zt t' Z ma. l The number v may vary. The intermediate members (say vc-z') consist each vof' four upright pipes .11

12 13 14 and two horizontal pipes 1516,

one at the *10P andorre at the bottom, bourg of the transverse length of theheater or member, and .fourv short horizontal pipes, viz. two upper ones marked 17 and two lower ones marked 18 which connect the two' extreme upright pipes 11 14; with the interme` dia-te upright pipes 12'13., One or more of the front members differ from the intermezontal pipes 17.* The first front member' amay have one or more intermediate horizon- Y tal pipes 25 26 which c'onnectthe .intermediate upright pipes and shouldbe so dis-j` posed that they do not obstruct the' openings inthe front plate 10.1 One or more of the rear members (say Z and m)fdiffer from'the vintermediate members inh'aving no lowerl shortvhorizontal pipes and, in having the intermediate upright pipes ,shortened so as to not reach above theshort horizontal pipes` 17. The rearmostmember ,a differs from all other members in having the whole space be- 'twe'en the pipes 1114 15 16 filled with pipes.

common feeding tube and a common dis- Vpartitions which serve as side walls of the furnace. r1`he shorthorizontal pipes 17 and 18 divide the spaces between the outer and intermediate wall into six longitudinal flues, three on each side of the furnace. The

rear end of the upper flue 21 of each side communicates with the rear upper end of the furnace through the openings formed in the rintermediate walls by shortening the intermediate upright pipes 12 13 in the two members Z m. rfhe front end of said flue 21 communicates with the front end of the next flue (22), and the rear end of this flue 22 communicates with the vrear end of the neXt flue (23). Y

The front end of each of the two flues 23 communicates with a flue 24 beneath the heater. An upper side or roof of these flues 24 serves the underside of the heater. The other sides of said fines may consist ofplates or brickwork or the like. The two flues 24 are kpreferably extended sidewise so as to flow together and' form a common flue, the

rear wall of which has an opening 48 for direct or indirect communicationwith the chimney.V 'llhe front plate p has openings in front of the flues 23 and 24. 1n the form shown in Figs. 1 and 2 these openings are covered by'cup-shaped or trough-like doors o, which serve as communications between the front ends of said fines. Y

ln the form shown in Fig. 4 one or more of the front members (say three) are modified so as to form communications between the front ends of lines 23 24 without using cup-shaped doors. For this purpose the ,portions 61 of the lowest horizontal pipe 16 which connect the upright pipes 11 12 ,and 1,3 14 are smaller in diameter than the rest of said pipe 16 so that between theV members having such narrower pipe portions 61 are formedv openings between said portions which openings serve as communications between tlues 23 24. The front plate 7i has openings before the flues 23 24 even in this instance but the doors covering said openings may be liat or nearly so, the openings being intended only orchiefly to give access to the flues when these should be cleaned from ash and soot. Similar openinlgs in front of the {iues 21. 22 serve the same purpose. Through one or more open- @ings in the centralr portion of plate p the fuel `is fed and the fire watched and poked and the ash removed.

j r1`he hot burntgasesleave the furnace at theI rear upper corners and enter the rear end of the two upper'flues 21, pass forward incomes the front end of said fines, then downward to the fine or fines 24 beneath'the heater, then backward through said flue 24 and out through its rear opening 48.

The intermediate upright pipes 12 13 may be either exactly vertical as shown in Fig. 1 or diverge downwards as shown in Fig. 4, so as to prevent the fuel from sticking between them. Y

The couplings which connect the members with the assembling tubes 31 32 33 34 may be as shown and described in` the former application. Fig. 12 shows a variatiomwhere one end of the coupling pipe ,41 is flaring or conical so as to tit the end of pipe 16 (or 11 or 14) without any supplementary ring or the like. Y

1t should be noted that the forms shown and described are examples only as several details may vary within the scope of the invention.

rllhe members Figs. 6 and 7 belong to a heater which differs from Fig. 4 only in having all upright pipes parallel.

l claim:

1. A heater with a series of upright transverse members connected with longitudinal assembling tubes, the members being com#kv posed of pipes between which a furnace and several longitudinal flues are formed, characterized by that the intermediate members are composed of four upright pipes and two horizontal pipes of the-transverse length' ofthe members which connect the upper and lower ends of the upright pipes, and four short horizontal pipes (17 18) which connect the upright pipes in pairs; and that one or more front members consist of four up right pipes and two long horizontal pipes (15 16) and two short horizontal pipes (18), while one or more of the rear members consist of two upright pipes of the height of the members and two shorter upright pipes (12 13) and two horizontal pipes of the transverse length of the members which connect the upper and lower ends of the longer upright pipes, and two short horizontal pipes which connect the longer upright other at the bottom, and a set of interme-Y diate pipes which fill the opening between said four vpipes as close as the possibility of welding admits, so that said member can serve as rear wall of the heater.

4. A heater as stated in claim 1, characterzed by that Vthose portions (61) of the lowest horizontal pipe (16) which connect the extreme upright pipes (11"14) with the intermediate upright pipes (12 13) are smaller in diameter in one or more of the front members thanthe rest of said pipe 10 the third iiue (23) anda'fourth flue (24) 15 lprovided beneath the heater. v

WALFRID KARLssoN. 

